Vulnerability in Jetbrains Toolbox App

CVE-2026-123320

In JetBrains Toolbox App before 3.9 insufficient warning in the login dialog allowed connecting to a malicious server

Published 2026-11-06 · last modified 2026-11-06.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Jetbrains Toolbox App

Weakness classification (CWE)

CWE-357

References

www.jetbrains.com/privacy-security/issues-fixed/

Frequently asked questions

What is CVE-2026-123320?: CVE-2026-123320 is a low-severity vulnerability in Jetbrains Toolbox App, classified under CWE-357. CVSS score: 3.1/10. Published 2026-11-06.
How severe is CVE-2026-123320?: Low severity. CVSS v3 base score is 3.1 out of 10.